https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81426
Bug ID: 81426
Summary: [SH]: unable to find a register to spill in class
'R0_REGS' when building webkit2gtk
Product: gcc
Version: 7.1.0
URL: https://buildd.debian.org/status/fetch.php?pkg=webkit2
gtk&arch=sh4&ver=2.16.3-2&stamp=1496275824&raw=0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: glaubitz at physik dot fu-berlin.de
CC: jrtc27 at jrtc27 dot com, kkojima at gcc dot gnu.org,
olegendo at gcc dot gnu.org
Target Milestone: ---
Target: sh*-*-*
Created attachment 41741
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41741&action=edit
Preprocessed source cc6kN21T.out (gzipped)
Trying to build webkit2gtk on Debian unstable sh4 with gcc-7.1.0 bails out
with:
/<<PKGBUILDDIR>>/Source/WTF/wtf/dtoa.cpp:1207:1: error: unable to find a
register to spill in class 'R0_REGS'
}
^
/<<PKGBUILDDIR>>/Source/WTF/wtf/dtoa.cpp:1207:1: error: this is the insn:
(insn 1022 1021 1023 126 (parallel [
(set (subreg:SI (reg:QI 2 r2 [1073]) 0)
(unspec_volatile:SI [
(mem/v:QI (reg/f:SI 4 r4 [1069]) [-1 S1 A8])
(reg:QI 1072)
(reg:QI 7 r7 [1075])
] UNSPECV_CMPXCHG_1))
(set (mem/v:QI (reg/f:SI 4 r4 [1069]) [-1 S1 A8])
(unspec_volatile:QI [
(const_int 0 [0])
] UNSPECV_CMPXCHG_2))
(set (reg:SI 147 t)
(unspec_volatile:SI [
(const_int 0 [0])
] UNSPECV_CMPXCHG_3))
(clobber (scratch:SI))
(clobber (reg:SI 0 r0))
(clobber (reg:SI 1 r1))
]) /usr/include/c++/6/bits/atomic_base.h:434 664
{atomic_compare_and_swapqi_soft_gusa}
(expr_list:REG_DEAD (reg:QI 7 r7 [1075])
(expr_list:REG_DEAD (reg:QI 1072)
(expr_list:REG_UNUSED (reg:SI 1 r1)
(expr_list:REG_UNUSED (reg:SI 0 r0)
(nil))))))
/<<PKGBUILDDIR>>/Source/WTF/wtf/dtoa.cpp:1207: confused by earlier errors,
bailing out
Attaching pre-processed source.
(...)
Preprocessed source stored into /tmp/cc6kN21T.out file, please attach this to
your bugreport.
